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Neottiella?
Charles Aron,
24-12-2024 09:02
Recently I found this orange Disco growing with Marchantia and mosses in a damp, shady corner close to farm buildings. Details are as follows:
Ascomata 4-7mm. Shallow bowl shaped when young, becoming discoid, sometimes with a lobed margin. Excipulum downy with hyaline/whitish hairs. Hymenium orange.
Ascospores ellipsoid, smooth, with granular contents, without guttules, 31-37.5x16.5-18.5.
Asci 245-305x27.5-35.
Hairs hyaline, thick-walled, septate, sometimes with mucilaginous deposit, 190-500x7.5-12.5,
some with a swollen basal cell. Marginal hairs wider, ones further down more slender and grading into rhizoids.
Paraphyses very pale under microscope, swollen to 6-10, septate.
Excipulum more or less a Textura Globosa with ellipsoid, thick-walled cells with walls up to c3 thick.
Asci and ascospores dextrinoid in Melzer's.
This taxon appears to be bryophilous/parasitic with rhizoids attaced to living mosses and Marchantia. I have considered Neottiella, Cheilymenia and Octospora but none seems to quite fit.
Seasons Greetings,
Charles.
Björn Sothmann,
24-12-2024 09:07
Re : Neottiella?
Hi Charles,
this looks like Octosporopsis nicolai.
Best,
Björn
Lothar Krieglsteiner,
24-12-2024 09:14
Re : Neottiella?
The liverwort should (then) be Lunularia cruciata. I do not see the "Brutbecher" that should be lunate and not circular like in Marchantia.
Charles Aron,
24-12-2024 09:42
Re : Neottiella?
Hi Bjorn and Lothar,
Many thanks for your rapid responses. I've added a couple more photos, one showing more typically shaped ascospores (in the other photo they were a bit wide). Also a view of the margin. I've never heard of Octosporopsis so that's interesting! I think the liverwort is Marchantia although I'm not an expert.
Best wishes,
Charles.
Many thanks for your rapid responses. I've added a couple more photos, one showing more typically shaped ascospores (in the other photo they were a bit wide). Also a view of the margin. I've never heard of Octosporopsis so that's interesting! I think the liverwort is Marchantia although I'm not an expert.
Best wishes,
Charles.
Charles Aron,
24-12-2024 09:48
Re : Neottiella?
I've just looked up nicolai it does seem to fit quite well.
Charles.
Charles.
Charles Aron,
24-12-2024 13:03
Re : Neottiella?
Hi again,
I've attached a photo of the liverwort which I think is Lunularia.
Charles.
I've attached a photo of the liverwort which I think is Lunularia.
Charles.
Lothar Krieglsteiner,
24-12-2024 13:14
Re : Neottiella?
yes, Charles.
O. nicolai is specialised to Lunularia, as I wrote.
I know it from Portugal and Spain.
By now I did not find it in Germany, although Lunularia grows there also.
Yours, Lothar
O. nicolai is specialised to Lunularia, as I wrote.
I know it from Portugal and Spain.
By now I did not find it in Germany, although Lunularia grows there also.
Yours, Lothar
Charles Aron,
24-12-2024 13:22
Re : Neottiella?
Hi Lothar,
A pleasing record; there are three previous ones for Britain according to FRDBI.
Best wishes,
Charles.
A pleasing record; there are three previous ones for Britain according to FRDBI.
Best wishes,
Charles.